Fire fighting nozzle and method including pressure regulation, chemical and eduction features

a technology of eduction features and nozzles, which is applied in the direction of combustion processes, burners, combustion types, etc., can solve the problems of decreasing the effective size of the nozzle discharge port, and achieve the enhancement of eduction of the second fluid or foam concentrate, diminishing cross sectional area, and enhancing eduction features.
US20060102749A1Inactive Publication Date: 2006-05-18TYCO FIRE PRODS LP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
TYCO FIRE PRODS LP
Publication Date
2006-05-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A fire fighting nozzle for extinguishing industrial scale fires including improved automatic pressure regulating features, enhanced educting features including central and peripheral channeling for foam concentrate, and combining with a capacity to throw dry chemical. Improved pressure regulating features include a double acting baffle and preferably a relief valve. Method and apparatus for automatically metering an additive such as foam concentrate into a conduit having a variably flowing fire fighting fluid therethrough, the conduit including a discharge device, proximate or downstream.
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Description

[0001] This application is a continuation-in-part of U.S. Ser. No. 09 / 284,561, filed Apr. 15, 1999, a national stage of PCT / US98 / 20061, filed Sep. 25, 1998, which is a continuation-in-part of U.S. Provisional Application No. 60 / 080,846 filed Apr. 6, 1998.FIELD OF INVENTION

[0002] The invention relates to fire fighting and fire preventing nozzles and more particularly to nozzles for extinguishing or preventing large industrial grade fires including flammable liquid fires and / or for nozzles for vapor suppression, and includes improvements in pressure regulating, educting and chemical discharge features, as well as methods of use and apparatus and methods for proportioning or metering foam concentrate into a fire fighting fluid system, in a nozzle or upstream of discharge device(s). BACKGROUND OF INVENTION

[0003] Prior patents relevant to the instant invention include: (1) U.S. Pat. No. 4,640,461 (Williams) directed to a self educting foam fog nozzle; (2) U.S. Pat. No. 5,779,159 (Willi...

Claims

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